A new
family of α, α directly linked bisBODIPYs was
developed through a MoCl5-mediated intramolecular oxidative
reaction. Due to the coplanar structure of the two conformationally
locked BODIPY units, these bisBODIPYs showed well-extended conjugations
and gave strong near-infrared absorptions and emissions with maxima
around 760 and 780 nm, respectively, with high fluorescence quantum
yields of ≤0.84. These dyes were successfully applied for in vitro and in vivo fluorescence imaging
by taking advantage of their beneficial photophysical properties.
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